1. College of Electronics and Information Engineering, Sichuan University, Chengdu 610065, China
2. Guangxi Key Lab of Multi-Source Information Mining and Security, Guangxi Normal University, Guilin 541004, China
3. Key Laboratory of Computer Vision and System, Ministry of Education, Tianjin University of Technology, Tianjin 300384, China
4. Guangxi Key Laboratory of Machine Vision and Intelligent Control, Wuzhou University, Wuzhou 543002, China
5. D.I. Sinma (Sichuan) Machinery Co., Ltd., Suining 629201, China
6. Yunnan Key Laboratory of Software Engineering, Yunnan University, Kunming 650600, China